Data di Pubblicazione:
2007
Abstract:
Aims. We searched for very high energy (VHE)gamma-ray emission from the supernova remnant Cassiopeia A
Methods. The shell-type supernova remnant Cassiopeia A was observed with the 17 m MAGIC telescope between July 2006 and January 2007 for a total time of 47 h.
Results. The source was detected above an energy of 250 GeV with a significance of 5.2s and a photon flux above 1 TeV of (7.3 +/- 0.7(stat) +/- 2.2(sys)) x 10(-13) cm(-2)s(-1). The photon spectrum is compatible with a power law dN/dE proportional to E-r with a photon index Gamma = 2.3 +/- 0.2(stat) +/- 0.2(sys). The source is point- like within the angular resolution of the telescope.
Methods. The shell-type supernova remnant Cassiopeia A was observed with the 17 m MAGIC telescope between July 2006 and January 2007 for a total time of 47 h.
Results. The source was detected above an energy of 250 GeV with a significance of 5.2s and a photon flux above 1 TeV of (7.3 +/- 0.7(stat) +/- 2.2(sys)) x 10(-13) cm(-2)s(-1). The photon spectrum is compatible with a power law dN/dE proportional to E-r with a photon index Gamma = 2.3 +/- 0.2(stat) +/- 0.2(sys). The source is point- like within the angular resolution of the telescope.
Tipologia CRIS:
01.01 - Articolo in rivista
Keywords:
gamma ray astronomy; Cosmic rays; IMAGING CHERENKOV DETECTOR
Elenco autori:
Albert, J; Aliu, E; Anderhub, H; Antoranz, P; Armada, A; Baixeras, C; Barrio, Ja; Bartko, H; Bastieri, Denis; Becker, Jk; Bednarek, W; Berger, K; Bigongiari, C; Biland, A; Bock, Rk; Bordas, P; BOSCH RAMON, V; Bretz, T; Britvitch, I; Camara, M; Carmona, E; Chilingarian, A; Coarasa, Ja; Commichau, S; Contreras, Jl; Cortina, J; Costado, Mt; Curtef, V; Danielyan, V; Dazzi, Francesco; DE ANGELIS, A; Delgado, C; DE LOS REYES, R; DE LOTTO, B; DOMINGO SANTAMARIA, E; Dorner, D; Doro, Michele; Errando, M; Fagiolini, M; Ferenc, D; Fernandez, E; Firpo, R; Flix, J; Fonseca, Mv; Font, L; Fuchs, M; Galante, N; GARCIA LOPEZ, R; Garczarczyk, M; Gaug, M; Giller, M; Goebel, F; Hakobyan, D; Hayashida, M; Hengstebeck, T; Herrero, A; Hohne, D; Hose, J; Hsu, Cc; Jacon, P; Jogler, T; Kosyra, R; Kranich, D; Kritzer, R; Laille, A; Lindfors, E; Lombardi, S; Longo, F; Lopez, J; Lopez, M; Lorenz, E; Majumdar, P; Maneva, G; Mannheim, K; Mansutti, O; Mariotti, Mose'; Martinez, M; Mazin, D; Merck, C; Meucci, M; Meyer, M; Miranda, Jm; Mirzoyan, R; Mizobuchi, S; Moralejo, A; Nilsson, K; Ninkovic, J; ONA WILHELMI, E; Otte, N; Oya, I; Paneque, D; Panniello, M; Paoletti, R; Paredes, Jm; Pasanen, M; Pascoli, Donatella; Pauss, F; Pegna, R; Persic, M; Peruzzo, L; Piccioli, A; Poller, M; Puchades, N; Prandini, Elisa; Raymers, A; Rhode, W; Ribo, M; Rico, J; Rissi, M; Robert, A; Rugamer, S; Saggion, Antonio; Sanchez, A; Sartori, Paolo; Scalzotto, VILLI MARIO; Scapin, V; Schmitt, R; Schweizer, T; Shayduk, M; Shinozaki, K; Shore, Sn; Sidro, N; Sillanpaa, A; Sobczynska, D; Stamerra, A; Stark, Ls; Takalo, L; Temnikov, P; Tescaro, D; Teshima, M; Tonello, N; Torres, Df; Turini, N; Vankov, H; Vitale, V; Wagner, Rm; Wibig, T; Wittek, W; Zandanel, F; Zanin, R; Zapatero, J.
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